Nginx replace REMOTE_ADDR with X-Forwarded-For

Question

I am quite new to Nginx, and it seems all so confusing. I have my server setup perfectly, but the problem is, since my server is protected using a HTTP proxy; instead of log

Answer 1

The correct way of doing this is by setting the real_ip_header configuration in nginx.

Example with trusted HTTP proxy IP:

set_real_ip_from 127.0.0.1/32;
real_ip_header X-Forwarded-For;

This way, the $_SERVER['REMOTE_ADDR'] will be correctly filled up in PHP fastcgi.

Documentation link - nginx.org